Question

class 9 geography ch 2 ( Physical features of India)

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Answer 1

Answer:

Terrain:

Terrain, or relief, is the third or vertical dimension of land surface (aka "up and down" dimension.)

When relief is described underwater, the term bathymetry is used.

Terrain is used as a general term in physical geography, referring to the lie of the land.

This is usually expressed in terms of the elevation (height of the land,) slope (angle of the elevation,) and orientation of terrain features.

Terrain affects surface water flow and distribution.

Over a large area, it can affect weather and climate patterns.

Relief:

"relief" refers to the highest and lowest elevation points in an area.

Mountains and ridges are typically the highest elevation points, while valleys and other low-lying areas are the lowest.

Folding:

Rock often deforms in such a way that it bends instead of breaking. This is called a fold.

The term fold is used in geology.

When two forces act towards each other from opposite sides, rock layers are bent into folds.

The process by which folds are formed due to compression is known as folding.

Folding is one of the endogenetic processes; it takes place within the Earth's crust.

Faulting:

A fault is a fracture in rock where there has been movement and displacement.

When talking about earthquakes being along fault lines, a fault lies at the major boundaries between Earth's tectonic plates, in the crust, and the earthquakes result from the plates' movements.

What are tectonic plates:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.

Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest.

Name the different plates on Earth:

The nine major plates are

• North American.
• Pacific.
• Eurasian.
• African.
• Indo-Australian.
• Australian.

• Indian.
• South American.
• Antarctic.

The largest plate is the Pacific Plate at 39,768,522 square miles (103,000,000 square kilometers).

Most of it is located under the ocean.